Your knee is a complex joint at the intersection between the thigh and the lower leg. The anterior cruciate ligament, or ACL, is one of two major knee ligaments that stabilize your knee joint. The other is the meniscus, which acts as a shock absorber. When you have both a torn meniscus and torn ACL your knee joint moves from side to side when you walk or run. This lateral movement puts extra stress on the muscles, tendons and ligaments that connect the knee to the hip and can cause pain in the hip as well as in the knee....